composed of a single strand of graduated cultured pearls, measuring approximately 6.00 to 9.20mm, the clasp set with rose-, old- and eight-cut diamonds, length approximately 535mm; a cultured pearl necklace, composed of a single strand of cultured pearls, set to an oval tourmaline and brilliant-cut diamond clasp, length approximately 420mm; and a pearl and blue lace agate necklace, length approximately 410mm